Paper tape is punched at 10 characters per inch,
so you'd get 170
bytes off the tape per scan.
Only if you're unimaginative enough to not loop the tape back and scan
multiple segments of it per scan. I have neither scanner nor paper
tape at ready hand, but I'd guess that I'd get some eight to ten
lengths of tape side-by-side on the scanner bed.
Paper tape, at least the 8-lvel stuff normally used with computers, is 1"
wide, so you'd get about 11 pases, in theory, on a scanenr.
But looping/folding the tape increases the risk of damaging it. It also
makes the join-up problem a lot worse (you have to scan ll the bits lost
in the turnrounds and then insert the data at the right places). And it
would tkae longer to repositio nthe tape between scans.
Give nthe altherntative is to make a pretty simple bit of mechanics and
electroncis, I really don't see why a scnaner is useful here.
Of course, that's only a factor of some eight to ten improvement.
It's still not all that easy (a lot harder
for _me_ tham making a
tape reader from scratch).
Well, sure. We already knew the right answer for you was to build the
reader. :-)
No, the right answer for me is to use one of the dozen or so commerical
readers I have here. ASE33s, Trend HSRs and UEDs, an HP2748 a DEC PS04,
and so on.
And software
to process the scanned images....
I considered mentioning that. I didn't, because I'd need to write some
host software either way: either software to process the scanned images
or software to interface to whatever hardware interface I build.
I am not a programmer, but I wrote a paper tape reader device driver for my
CoCo (OS-9) in a couple of hours way back... I don't think _I_ could
write image processing software in a coople of _months_.
-tony